Features of CCleaner Professional Cleans your browsers automatically when you close them Downloads and installs the latest version as soon as it’s available Set CCleaner to run in the background when you’re not using your computer Removes built-up junk that takes up space and slows your computer down Stop apps from running when your computer starts, which can give you a speed boost Even default Windows applications you don’t want! Disk Defragmentation File Recovery Hardware Inventory System Requirements and Technical Details Supported OS: Windows XP/7/8/8.1/10 Processor: Pentium IV or higher RAM: 1 GB RAM Free Hard Disk Space: 50 MB or more How to Install Instructions Disconnect internet, block .exe with firewall Then use any generated key with any name